The 38-year-old is described as being 5ft 11in tall, of slim build with light brown hair.

He was last seen wearing a white beanie hat with three horizontal black lines above the brim, a blue fleece, the body of which is sky blue with darker blue arms and has a white emblem or brand name on the left hand side of the chest area. He was also wearing light coloured trousers, possibly jeans.

North Wales Police are pursuing a number of other enquiries. One of these includes the possibility that he may have travelled to the Welshpool area and North Wales Police are in contact with colleagues at Dyfed Powys Police.

Police appeal for missing Michael

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Temporary Chief Inspector Mark Armstrong said: “We are growing increasingly concerned for Michael’s whereabouts and are urging anybody who may have information to come forward.

“We are also appealing direct to Michael to get in touch to let us know that he is safe and well.

“Our enquiries are ongoing and we are using social media to help further our appeal – I would encourage all to help us by sharing and re-tweeting our messages.”

CCTV footage is also being investigated and contacts have been made with local bus companies.

Checks have also been carried out with the hospitals and with Michael’s bank and mobile phone provider.

The police helicopter has also assisted with the search as well as the Search and Rescue Team at RAF Valley, while posters have also been distributed in and around the Bangor and Llandudno areas.

Anybody with information should contact North Wales Police on 101 or alternatively contact police using the live web chat facility.